Pectin from Okra (Abelmoschus esculentus L.) Has Potential as a Drug Release Modifier in Matrix Tablets

Table 6

Drug release kinetics of metformin in the various matrix tablet formulations.

Formulations	Zero order (r^2)	First order (r^2)	Higuchi (r^2)	Hixson–Crowell (r^2)	Korsmeyer–Peppas (r^2)
F1	0.9045	0.8883	0.9627	0.7833	0.7437
F2	0.8417	0.7558	0.9571	0.8923	0.9609
F3	0.9786	0.6405	0.9450	0.7980	0.7790
F4	0.9119	0.9772	0.9579	0.9699	0.8888
F5	0.9009	0.8983	0.9604	0.9498	0.6889
F6	0.8645	0.9316	0.9647	0.9364	0.9300